Hydrocarbon and gas burner



PATENT OFFICE.

! EDWIN E. RUSHTON, 0]? LOS ANGELES, CALIFORNIA.

HYD ROCARIBON AND GAS BURNER.

Specification of Letters Patent.

Patented Sept. 20, 1921.

Application filed September 30, 1920. Serial No. 413,811.

To all whom it may concern:

Be it known that I, EDWIN E. RUsHroN, a citizen of the United States,residing at Los Angeles, in the county of Los Angeles and State ofCalifornia, have invented a new and useful Hydrocarbon. and Gas Burner,of which the following is a specification. a

This invention relates to devices for burning hydrocarbon andgasintermixed with air.

One of the objects of this invention is to thoroughly agitate the fuel,whether gas or hydrocarbon is being used, so as to bring it into asuitably atomized state to easily mix with air at the properpredetermined point. 7

Another object is to provide a device with an air-supply connectionpreferably controlled by a gate-valve, a gas connection terminatingwithin the air supply having a suitable number of orifices forming com-vmunicating means between the gas and air supply so as to properlydistribute and mix the gas with the air and a hydrocarbon supply tubepassing through the whole for mixing with the gas and air mixture.

Another object is to provide a controlling valve for the hydrocarbon bywhich the hydrocarbon-supply can be properly adjusted as to amount anddirection to be taken to properly mix with the air.

Another, object is to provide such controlling ineans which can easilybe cleaned and adjusted without requiring a'dismantf the whole device.

lin

(gther objects will appear from the fol-.

lowing description and appended claims as well as from the accompanyingdrawing, in which Figure 1 is a longitudinal midsectional view of thedevice.

Fig. 2 is a fragmentary detail side elevation of the stem of thecontrolling valve.

The main body or outer shell 1 forms the air-supply connection of thedevice, having preferably a gate valve 2 for controlling the airpassage. The gas nozzle 3 is preferably disposed concentrically withinthe front end 4 of the air-supply connection. Such gas nozzle, 3 isnaturally the termination of a gas supply connection 5. A number oforifices 6 are provided in the gas nozzle, so distributed in the surfaceof the nozzle-body, as to discharge the gas into the air supply inpractically atomized form. The orifices or holes or perforations 6 areshown of rather large size, but it will easily be understood that suchorifices are so proportioned as to give favorable results, and only forthe sake of illustration to clearly appear in the drawing are suchperforations so enlarged and indicated at such spaces. From theillustration it is also clear that the perforations are preferablydisposed somewhat in the direction of the passing air. All perforationsare furthermore so distributed over the as nozzle as to assure athorough mixing 0 the gas with the passing air. The gas nozzle isprovided with an-inner tubelike partition 7 forming a passage 8 for thehydrocarbon through the gas nozzle. The hydrocarbon passage normally hasno communication with the gas nozzle.

The hydrocarbon nozzle 9 is provided with a sleeve 10 to make itpossible that the controlling valve 11 can be properly fitted. Thecontrolling valve 11 is illustrated in detail in Fig. 2, the stem 12simply being threaded, (pointed or fiat threads) the flat threads beingpreferred in the illustration since a better fittin can be accomplished,as will easily be un erstood, the tops 13 of the threads being ofpolished cylindrical form. The sleeve 10 is then preferably ground-fitdisposed over the threaded portion of the stem. Such threading, fitting,

and, eventually grinding of the threaded portion of the stem and of thebore of the sleeve'assures a perfect closing of the controlling valve.In cases where not such exact fittin is required, it is naturally easieraccomplis ed and assembled. From the point 14 to the front end 15 thethreads are gradually cut deeper, as illustrated, so that the amount ofpassing hydrocarbon can be adjusted by moving the stem back or for ward,as it may be required. For adjusting the controlling valve the stem 12is provided with threads at a suitable point, in the drawing it beingfurther to the rear as indicated at 16. A turning of the stem thennaturally causes a moving of the threaded portion of the stem inrelation to the sleeve 10.

I'n closed position, as illustrated in Fig. 1, the unthreaded portion fthe stem reaches far enough into the sleeve 10 so as to shut off thepassage through the sleeve, as will easily be understood.

For opening the controlling valve, the stem has then only to be turnedto move is compelled to pass through the whole.

threads, thereby receiving a whirling motion. In this whirlingcondition, the hydrocarbon is thrown against the taper face 18 andthrough the orifice 19, naturally having the tendency to fly; and spreadout radially as soon as it emerges from the nozzle 9. The

front face 20 of the nozzle 9 being slightly. .tapered, the atomizedhydrocarbon naturally spreads out in the direction of the lines 21.

' The hydrocarbon connection 22 is in communication with the passage 8through the device and controlled by the controlling valve 11 during the(normal working or operating time.

If the controlling valve 11 is not well fitted within the sleeve 10, ashut-off valve is' naturally provided in the hydrocarbon connectionline, not shown in the drawing, but will easily be understood withoutfurther illustration.

The front end 4.- of the outer shell 1 is preferably closed by anadjustable cap 23. This cap 23 is adjustably' mounted on the front endof the outer shell on threads or other similar means for shifting ormoving the cap in longitudinal direction in relation to the hydrocarbonnozzle 9 so as to regulate the space between the mouth of the cap andthe nozzle 9. The cap is provided with inner faces to direct theout-passing gas mixture centrally so as to penetrate the outspreadingdischarge of the atomized hydrocarbon, thereby naturally thoroughlyintermixing with the discharging atomized hydrocarbon. The inner face 24of the cap 23 slants inwardly from the practically cylindrical sleeveportion of the cap so as to cause the gas mixture to discharge in aboutthe direction indicated by the lines 25, which is in a directionnecessarily causing the air (or air and gas mixture, if gas is used incombination) to penetrate the discharged atomized hydrocarbon, as willbe understood. from the above.

Of course, air alone may be used in co1nbination with the hydrocarbonand the air will then unite at the point of penetrating between the cap23 and the nozzle 9. The gas connection 5 is in such a case, andpreferably always, provided with a shutoff valve for controlling the gassupply, such a valve The space within the gas nozzle 3 surrounding theinner tube 7 formsthe pressure equalizing and gas distributing chamher,as indicated at 27.

The knob or handwheel 28 is for'handling and operating the controllingvalve 11 on the stem 12.

IVith this device as illustrated in the drawing and described above, aclogging up of the controlling valve, or a shutting-down of. the serviceof the burner on account of such clogging up can be avoided, since thestem 12 can easily be unscrewed by the handwheel or knob 28 through itsthreaded'portion 16 to be entirely removed from the device sothat thethreaded portion of the controlling valve 11 can be cleaned while therest of the device remains intact. The sleeve 10 naturally cannot getclogged up since the threaded portion of the valve 11 automaticallycleans it.

Having thus described my invention, I claim:

1. In a burner ofthe class described, a controlling valve havinggradually deepening threads forming the passage-adjusting andcontrolling means of the valve and having setting means to move thevalve in longitudinal direction independent of the adjusting andcontrolling means.

2. In a; burner of the class described, a valve stem having threads tomove the stem in longitudinal direction and having feeding channels ofgradually increasing cross sectional area near the end of the stem.

3. In a burner of the class described, a sleeve having a cylindricalbore forming a valve seat, and a stem having feeding channels ofgradually increasing cross sectional area at a point to extend into thecylindrical bore of the sleeve for adjustably controlling the passagethrough the sleeve.

4. In a burner of the class described, an outer shell forming an airsupply and mixing chamber, an adjustable cap provided on the front endof the outer shell forming the nozzle for the air-discharge, ahydrocarbon connection terminating within the outer shell, a nozzleprovided on said hydrocarbon supply connection, and a valve stem havingfeeding channels of gradually increasing cross sectional area at a pointto engage within the second-named nozzle for adjustably controlling thepassage through the second-named nozzle. and having threads for settingthe stem within the shell irrelative to the feeding channels.

5. In a burner of the class described, an

outer shell formin an air supply and mixing chamber an, a justable capprovided on the front end of the outer'shell forming the nozzle for theair-discharge, a gas-supply con nection terminating within the mixingchamber having orifices distributed and arranged over its length as wellas circumference, so

1 as to discharge into the largest possible bore, and a valve stemhaving feeding channels of graduallyincreasing cross'sectional area at apoint to engage with thesleeve for adjustably controlling the passa' ethrough the sleeve and thereby through t e secondnamed nozzle.

6. 'In a burner of the class described, an

outer shell forming an air supply and mixing chamber, an adjustable capprovided on the front end of the outer shell forming the nozzle for theair-discharge, a gas-supply connection terminating. within the mixingchamber having orifices distributed and-arranged over its length as wellas circumference so as to discharge into the largest possible volumeinside of the outer shell, the gas-supply connection having an innertubelike partition forming a hydrocarbon passage through the as su plymeans, a second nozzle, the said secon -named nozzle being provided onthe front end of the as supply connection overlapped by the rst-namednozzle so as to form an air dischargin passage between the two nozzlesfor de ecting the outpassing gas mixture in a conical central direction,a sleeve within the secondnamed nozzle, and a. valve stem havinggradually deepening threads at a point to engage with the sleeve foradjustably controlling the passage through the sleeve and therebythrough the second-named nozzle, and having means adapted to clean thepassage through the sleeve while operated.

In testimony. that I claim the foregoing as my invention I have signedmy name in v the presence of two subscribin witnesses. EDWIN E. USHTON.Witnesses: Y Y

. O'r'ro H. KRUEGER,

Jnssm A. MANOCILZ

